Pulsing device



Jan. 28, 1964 w. J. CURTIN ETAL 3,119,200

PULSING DEVICE Filed March 10, 1961 2 Sheets-Sheet i Y mH-HI l I If 1! aINVENTORS William .I ('urbin Paul Carbery ATTORNEYS Jan. 28, 1964 w. J.CURTINV ETAL I 3,119,200

PULSING DEVICE Filed March 10, 1961 2 Sheets-Sheet 2 -||IIII 7 zla I I II I II I I I I I I .95

INVENTORS n 4 William J. Uurz'n Paul Carbery ATTORNEYS Patented Jan. 28,1964 3,119,200 PULSHNG DEVICE William I. Curtin and Paul Carbery, bothof 119 E. Main St, Madison 3, Wis. Filed Mar. 10, 1961, Ser. No. 94,31335 Claims. (Cl. 46-432) This invention relates to a pulsing device andmore particularly relates to a pulsing device for producing a simulatedheart beat and pulse in a toy doll or animal.

While the toy industry has a long history of striving to produce andmarket toy dolls and animals of a more lifelike nature, it has not tothis date been successful in marketing toys having both a realisticheart beat and a a realistic heart beat and pulse in toys.

It is another object of the invention to produce a pulsing device of theforgoing type which through its single cycle of operation produces botha realistic heart beat and pulse.

It is another object of the invention to produce a pulsing device whichis small in size, economical to manufacture, and rugged in constructionso as to withstand the harsh usage to which toys are generallysubjected.

It is still another object of the invention to produce a pulsing devicefor use in toy dolls and animals wherein the device is unitary inconstruction and produces both a realistic pulse and heart beat as anintegral operation.

These and further objects and advantages of the invention will becomemore apparent upon reference to the following specification and claimsand the appended drawings wherein:

FIGURE 1 is a vertical cross-section of a pulsing unit constructedaccording to the present invention;

FIGURE 2 is a horizontal cross-section of the pulsing device taken alongthe line 22 in FIGURE 1;

FIGURE 3 is a partial plan view showing the mounting of the contactspring on the pulsing device;

FIGURE 4 is a plan View of the underside of the diaphragm and coilassembly showing the placement of the contact carried by the diaphragm;

FIGURE 5 is an exploded cross-sectional view of the valve unit; and

FIGURE 6 is a vertical elevation, partly in section showing the pulsingunit completely assembled in its containing can.

Referring to FIGURE 1 the pulsing device is indicated generally at 10and consists of a magnetic subassembly generally indicated at 12, adiaphragm and coil subassembly generally indicated at 14, a capgenerally indicated at 15, and a valve subassembly generally indicatedat 16.

The magnetic subassembly 12 is comprised of an annular magnet 18 havinga central bore 20 and upper and lower faces 22 and 2d. The magnet isaxially magnetized so that opposite magnetic poles thereof appear at theupper and lower faces 22 and 24. A disc shaped lower pole piece 26 abutsthe lower face 24 of the annular magnet 18 and carries in a centralopening 28 a core 30 which extends up through the bore 20 in the centerof the magnet 18. A washer-like upper pole piece 32 abuts the upper faceof the magnet 18 and has a central opening 34 of the same diameter asthe bore 20 in the magnet 18. The upper end 36 of the core 30 lies inthe same plane as the upper surface 38 of the upper pole piece 32.

The magnet 18 is preferably formed of a ceramic magnetic material suchas Indox 1, although other equivalent magnetic materials may beutilized. The pole pieces 26 and 32 are of a ferro-magnetic materialsuch as 1010 steel. In a specific embodiment of the invention the magnet18 was an Indox I magnet sold under the trade name of StackpoleCeramagnet by the Stackpole Carbon Company of St. Marys, Pennsylvania.The magnet had an outside diameter of 1 inch, a bore diameter of .375inch and an axial length of .250 inch. The pole pieces 26 and 32 wereformed of 1010 steel and had a diameter of one inch and a thickness of.06 inch. The lower pole piece 26 carried a core 30 which was alsoformed of 1010 steel and had a diameter of .16 inch and a height of .370inch.

The diaphragm and coil subassembly 14 consists of a latex rubber ring 40having a latex diaphragm 42 across its lower edge. In manufacture, thediaphragm 42 is a separate sheet of latex bonded to the ring 40 so thatan integral unit results. The ring 40 carries an inwardly extending rib44 for a purpose presently to be described. Mounted on the underside ofthe diaphragm 42 is a coil 46 which is solenoidal in form and which isattached to the diaphragm by means of a suitable adhesive.

The diaphragm and coil subassembly 14- is mounted on a unitary cap 48having a top Wall 50 and a cylindrical peripheral wall 52. The outersurface of the peripheral wall 52 is provided with a groove 54 whichmates with the rib 44 on the ring 40 to secure the diaphragm in airtight relationship across the open mouth formed by the peripheral wall52 of the cap. The cap and diaphragm thereby define a chamber 56. Thetop Wall 50 of the cap carries a valve port which consists of a bore 58opening into the chamber 56. The upper end of the bore 58 connects to acountersunk opening 60 extending through the upper surface of the topwall 50.

The diaphragm and coil subassembly is mounted on the magneticsubassembly by means of a spacer washer 62 which is split at one side at64, as best seen in FIGURE 2. The spacer washer 62 may be formed offiber and may be secured to the upper pole piece 22 and to the diaphragm42 by suitable adhesive.

Referring to FIGURE 2, a cylindrical lower contact 66 is secured to theupper face of the upper pole piece 22 by an electrically conductiveadhesive. The contact 66 in a specific embodiment constituted a Fassaloy99 wire having a diameter of .03 inch and a length of .20 inch. Sincethe magnet 18 is formed of a ceramic material it is electricallynonconducting and it is therefore necessary to utilize a conductivecoating 68 down at least one side of the magnet to provide an electricalconnection between the upper pole piece 22 and the lower pole piece 24in order to complete the electrical circuit which will presently bedescribed.

Referring to FIGURE 4, one lead 70 from the coil 46 is soldered at 72 toa cylindrical upper contact 74 which is glued to the underside of thediaphragm 42 with its axis normal to the axis of the lower contact 66.The upper contact 74 in a specific embodiment of the invention consistedof a 15% platinum silver wire having a diameter of 0.01 inch and alength of .20 inch. Referring to FIGURE 1 it is to be noted that thelead 70 from the coil 46 to the upper contact 74 is maintained out of engagement with the diaphragm except at the point at which it is securedto the upper contact 74. It has been found that unless this is done therelative movement between the lead and the diaphragm causes an ultimatecutting and rupture of the diaphragm.

Referring to FIGURE 1, the upper wall 50 of the cap 48 carries at itsouter periphery an upwardly extending tit 76 which serves as a securingpost for a contact spring indicated generally at 78. As may be seen inFIGURE 3, the contact spring '78 comprises an elongated arm 80 which isarcuate in cross-section, as seen in FIGURE 1,

and which has at one end thereof a cross member 82 carrying a suitableslot for receiving the tit 76. In a specific embodiment the contactspring 78 was formed of beryllium copper. The unitary cap 48 ispreferably formed of a plastic material and the contact spring 78 may belocked in position by simply applying heat to the top of the tit 76 soas to melt it about the opening in the cross member 82. The other lead84 from the coil 46 is soldered to the cross member 82 of the contactspring 86 as is best seen in FIGURE 3. Again it is to be noted that thelead 84 is spaced from the diaphragm 42 except at the position where thelead is in engagement with the diaphragm between the diaphragm and thespacer washer 62.

Referring to FIGURES 1 and 5 the valve subassembly comprises a circularvalve member 88 which overlies the top wall 50 of cap 48 and overliesthe countersunk opening 60 therein. An aperture 90 is provided in thevalve member 88 at a position out of alignment with the opening 60 inthe cap 48. The valve member 88 is preferably formed of latex and in aspecific embodiment comprised a latex disc .50 inch in diameter having athickness of .001 inch and an aperture 90 with a diameter of .060 inch.While latex is the preferred diaphragm material, it is possible to useother resilient materials such as polyethylene or polyvinylchloride. Thethickness of the valve member should not be less than .001 inch.

The valve member 88 is secured in position on the top wall 50 of the cap48 by means of a paper or plastic ring 92 having a contact adhesive onits undersurface 94, as seen in FIGURE 5. The ring 92 is adhered both tothe diaphragm and to the top wall 50 of the cup 48.

Referring now to FIGURE 6, the pulsing unit is mounted in a container 96which is preferably of metal and which, in a specific embodiment,consisted of a zinc can having a wall thickness of .02 inch. The lowerpole piece 24 is in electrical contact with the bottom 96 of thecontainer. An insulating top 100 forms a closure for the can 96 and issecured in position by an inward curl 102 of the upper edge of the can.A hole 110 is provided in the top 100 to allow the air movementnecessary to the creation of the pulse. The top 100 also carries acenter contact 104 which is friction fitted into an opening 106 so thatthe lower end of the contact 104 engages the contact spring 78. Thepulsing device is held securely in position in the can 96 by means of acylindrical retainer ring 108 which abuts the top 100 and the upper polepiece 32.

According to the invention the container 96 is of a diametersubstantially equal to the diameter of a Type D dry cell battery so thatthe pulsing unit may be conveniently inserted into contact with such abattery in the same manner as another dry cell.

In operation the pulsing unit is connected to a Type D dry cell with oneterminal of the dry cell connected to the contact 104 and the otherterminal to the container 96. In the rest position of the diaphragmshown in FIGURE 1 an electrical circuit is established to the coil 46which rapidly drives the diaphragm 42 into the chamber 56 therebyexpelling air through the opening 58-60. This causes the valve member 88to lift so that air escapes through the opening 90 therein. The upwardmovement of the diaphragm 42 causes electrical contact between the uppercontact 74 on the diaphragm and the lower contact 66 to be broken toarrest the driving force of the coil 46. The stretch of the diaphragmnow causes the coil to settle back towards the rest position shown inFIG- URE 1. This return movement is slowed by the pneumatic effect asair is sucked slowly into the chamber 56 through aperture 90 in valvemember 88 and opening 58-60 in the cap 48, with leakage occurringbetween the valve member 88 and top surface of the wall 50 of the cap 48to establish communication between opening 90 and opening 58-60. Contactbetween the upper contact 74 and the lower contact 66 is ultimatelyreestablished thereby repeating the cycle.

The most important feature of the pulsing device of this invention isits ability to produce a readily detectable pulse and a realistic heartbeat by the action just described, and in order to achieve this effectthere are a number of criteria which must be adhered to in theconstruction of the unit. When the unit is properly constructed inobservance of these criteria it need only be inserted into a hollow dollor a stulfed animal in order to produce not only a realistic heart beatsound but also the sensation of a pulse in synchronism with that sound.This is to say, a doll or stuffed animal into which the unit has beeninserted not only produces the sound of a heart beat but it is alsopossible to literally feel a pulse by simply laying ones hand upon thedoll or animal.

Of these criteria the most important is the relationship of the coil tothe diaphragm and to the contact system. In a specific embodiment of theinvention the coil 46 con sisted of 385 turns of number 39 copper wirehaving a nominal diameter of .0035 inch and weighing 0.50 gram. Thediaphragm was of latex having a thickness of .002 inch. The ring 40 wasalso of latex having an outer diameter of .83 inch, an inner diameter of.75 inch and an inner diameter of the rib 44 of .65 inch. The cap overwhich this diaphragm is positioned had an inner diameter of .73 inch, achamber depth of .120 inch, an outer diameter of .90 inch. With thesedimensions the diaphragm was subject to a 20% stretch when in positionon the cap. The diaphragm had a resiliency in this condition such thatit deflects into the chamber .004 inch per gram of applied weight. Theoptimum relationship between the mass of the coil and the diaphragm wassuch that the weight of the coil deflected the diaphragm into thechamber .002 inch :20% when the diaphragm-cup subassembly is invertedfrom the position seen in FIGURE 1. In operation the energization of thecoil deflects the diaphragm of the way into the cup.

In order to secure satisfactory pulse and heart beat utilizing a 1.5volt battery the coil should have an ampere turn capacity ofapproximately 19-34, a resistance of approximately 20-40 ohms and a wirediameter of approximately .0025.005 inch.

The diaphragm must be formed of a stretchable material with latex beingthe preferred material with a minimum thickness of .0015 inch. It hasalso been found that in order to operate satisfactorily in thisparticular device the latex must be handled in a specific manner in themanufacture of the units. It has been discovered that where the latex isexposed to the radiation from white fluorescent lamps after the timethat it is stretched over the cap, the diaphragms fail in service aftera relatively short period of time. Experiments to determine the cause ofthis failure were undertaken and, while the complete nature of thephenomena is not completely understood as of this time, it is believedthat the deleterious effect is caused by the ultraviolet radiation froma white fluorescent lamp. When the light source was changed to yellowfluorescent light it was found that the deterioration no longeroccurred. While it was at one time thought that the action of theultraviolet light on the ozone in the atmosphere was causing thedeterioration, subsequent tests proved that this is not completelyaccurate and that other agents are probably involved. As a result, inorder to form satisfactory pulsing units it is necessary that thediaphragms, after having been stretched over the cups, should not besubjected to substantially any more ultraviolet radiation than is foundin the atmosphere or than is encountered in exposure to the light ofyellow fluorescent lamps.

During the time that the coil is energized and drives the diaphragm intothe chamber, the shape of the diaphragm is that of a truncated cone.After the coil is deenergized and the diaphragm begins to settle, itsshape becomes either dome-like or semi-toroidal. In any event, theportion of the diaphragm immediately adjacent to the coil moves into thechamber during the time that coil is energized. At the moment that thecoil is deenergized, it

ceases its inward movement and immediately reverses its direction ofmovement to move out of the chamber.

It has been found, however, that other portions of the diaphragmintermediate the coil and the rim of the cup continue to move into thechamber after the coil has been deenergized and subsequently reversetheir direction of movement after the diaphragm has assumed itsdome-like or semi-toroidal shape. It is an important feature of thisinvention that the contact should be placed on the diaphragm at theposition which moves the greatest distance inwardly after deenergizationof the coil. In a specific embodiment the contact 74 was placed .090inch from the outer diameter of the previously defined coil. This placesthe contact 45% of the distance from the outer diameter of the coil tothe inner diameter of the chamber. For effective operation the contactshould be at this position or no more than closer to the coil andfarther away, with the percentages being percentages of the distancebetween the outer diameter of the coil and the inner diameter of thechamber. Stated differently, the upper contact should be spaced from theouter periphery of the coil by a distance equal to -65% of the distancebetween the outer periphery of the coil and the inner periphery of thecap.

With respect to the operation of the valve, the opening 5360 in theupper wall of the cap 43 must have a diameter at the inner end thereofwhich is smaller than the diameter at the outer end where the valvemember 88 contacts the cap. In the specific embodiment of the inventionthe opening 58 had a diameter of .04 inch while the opening 66 wascreated by a 60-degree countersink and should have a maximum diameter of.125.250 inch. It is not necessary that the shape of this opening 60 beconical (the upper opening may be simply counterbored) so long as theupper hole is larger than the lower.

When the unit is constructed according to the foregoing criteria it ispossible to obtain both a realistic pulse and heart beat using a Type Dflashlight cell as a source of power. The pulsing device is capable ofwithstanding the rough usage to which toys are ordinarily subjected andcan be economically manufactured.

While the illustrated embodiment of the invention shows a valvingarrangement wherein air is forced out of the chamber on energization ofthe coil, it will be obvious that the converse may be true wherein airis sucked into the chamber upon energization of the coil. That is to saythe coil and magnetic circuit may be arranged to cause fast movement ofthe diaphragm away from the chamber with a slow return to the restposition. With an arrangement of this type the direction of the opening586@ is reversed, the valve assembly 16 is mounted in the chamber andthe movable contact is similarly located. The pneumatic action desiredis one which permits fast movement of the diaphragm upon energization ofthe coil with a slow return to the rest position and equivalentpneumatic arrangements are intended to be within the purview of thisinvention. While the converse of this movement is feasible, i.e., slowmovement of the diaphragm on energization of the coil and fast return ondeenengization, this arrangement does not provide as efficient anaction.

Although the illustrated embodiment of the invention is believed torepresent the optimum and uses a coil attached to the diaphragm inconjunction with a stationary permanent magnet circuit, it will beapparent to those skilled in the art that the portion of theelectromagnetic circuit attached to the diaphragm may be a permanentmagnet or a ferro-magnetic material, so long as the previously discussedmass and diaphragm resiliency requirements are fulfilled.

The valve action which is illustrated provides a valve means wherein airpasses more rapidly through the valve means in one direction than in theopposite direction and equivalent arrangements for accomplishing thisfunction are intended to be covered within thescope of this invention.

The invention may be embodied in other specific forms without departingfrom the spirit or essential characteristics thereof. The presentembodiments are therefore to be considered in all respects asillustrative and not restrictive, the scope of the invention beingindicated by the appended claims rather than by the foregoingdescription, and all changes which come within the meaning and range ofequivalency of the claims are therefore intended to be embraced therein.

What is claimed and desired to be secured by United States LettersPatent is:

1. A pulsing device comprising a container forming an air chamber, arubber diaphragm forming one wall of said chamber, said diaphragm beingin a stretched condition when at rest, said diaphragm in a stretchedcondition having been exposed to light having an ultraviolet componentsubstantially no greater than is found in the atmosphere, valve meansassociated with said chamber for permitting transfer of air to and fromsaid chamber, said valve means being such as to permit air transfer inone direction at a faster rate than in the opposite direction,electromagnetic means operatively associated with said diaphragm, meansadapted to be connected to a source of electric energy for periodicallyenengizing said electromagnetic means to cause periodic distension ofsaid diaphragm from said rest position, said distension causing one sideof said diaphragm to move air through said valve means at said fasterrate, the other side of said diaphragm being subjected to substantiallyatmospheric pressure as said air is forced through said valve means atsaid faster rate, said diaphragm returning to its rest position as airflows through said valve means in an opposite direction at a slowerrate.

2. A device as set out in claim 1 wherein said means adapted to beconnected to a source of electric energy comprises switch means havingone elongated element attached to said diaphragm and a second elongatedelement having its axis substantially normal to the axis of said firstelement and adapted to be contacted thereby.

3. A device as set out in claim 1 wherein said container comprises a onepiece cup and said diaphragm is formed of latex.

4. A pulsing device comprising a container forming an air chamber, arubber diaphragm forming one Wall of said chamber, said diaphragm beingin a stretched condition when at rest, said diaphragm in a stretchedcondition having been exposed to light having an ultraviolet componentsubstantially no greater than is found in the atmosphere, valve meansassociated 'with said chamber for permitting transfer of air to and fromsaid chamber, said valve means being such as to permit air transfer inone direction at a faster rate than in the opposite direction,electromagnetic means operatively associated with said diaphragm, switchmeans adapted to be connected to a source of electric energy forperiodical ly energizing said electromagnetic means to cause periodicdistension of said diaphragm from said rest position, said distensioncausing one side of said diaphragm to move air through said valve meansat said faster rate, said diaphragm returning to its rest position asair flows through said valve means in an opposite direction at a slowerrate, said switch means having one element thereof carried by saiddiaphragm and another element thereof stationarily mounted, said switchelements being in electrical contact when said diaphragm is stationaryand separated when said diaphragm is distended from its rest condition.

5. A device as set out in claim 4, said diaphragm having portionsthereof which reverse their direction of movement when saidelectromagnetic means is deenergized and portions thereof which continueto move in the same 7 direction after said electromagnetic means isdeenergized, said element of said switch attached to said diaphragmbeing attached approximately at the portion thereof which continues itsmovement for the greatest distance after said electromagnetic means isdeenergized.

6. A device as set out in claim 4 wherein said electromagnetic meansincludes a coil attached to said diaphragm, the weight of said coilbeing such that it distends such diaphragm .002 inch i20%.

7. A device as set out in claim 4 wherein said electromagnetic meansincludes a coil attached to said diaphragm and having an ampere-hourcapacity of 19-34 with a 1.5 volt source of electric power. 1

8. A device as set out in claim 7 wherein said coil has a resistance of20-40 ohms.

9. A pulsing device comprising a container forming an air chamber, arubber diaphragm forming one wall of said chamber, said diaphnagm beingin a stretched condition when at rest, said diaphragm in a stretchedcondition having been exposed to light having an ultra-violet componentsubstantially no greater than is found in the atmosphere, valve meansassociated with said chamber for permitting transfer of air to and fromsaid chamber, said valve means being such as to permit air transfer inone direction at a faster rate than in the opposite direction,electromagnetic means operatively associated with said diaphragm, saidelectromagnetic means having one portion attached to said diaphragm formovement therewith, switch means adapted to be connected to a source ofelectric energy for periodically energizing said electromagnetic meansto cause periodic distension of said diaphragm from said rest position,said distension causing one side of said diaphragm to move air throughsaid valve means at said faster rate, the other side of said diaphragmbeing subjected to substantially atmospheric pressure as said air isforced through said valve means at said faster rate, said diaphragmreturning to its rest position as air flows through said valve means inan opposite direction at a slower rate, said switch means having oneelement thereof carried by said diaphragm and another element thereofstationarily mounted, said switch elements being in electrical contactwhen said diaphragm is stationary and separated when said diaphragm isdistended from its rest condition, said diaphragm having portionsthereof which reverse their direction of movement when saidelectromagnetic means is deenergized and portions thereof which continueto move in the same direction after said electromagnetic means isdeenergized, said element of said switch attached to said diaphragmbeing attached approximately at the portion thereof which continues itsmovement for the greatest distance after said electromagnetic means isdeenergized.

10. A device as set out in claim 9 wherein said elements of said switchcomprise elongated members having their longitudinal taxes substantiallynormal to one another.

11. A pulsing device comprising a container having an open end, adiaphragm disposed over said open end, electromagnetic means having oneportion thereof attached to said diaphragm, switch means adapted toperiodically connect said electromagnetic means to a battery, oneelement of said switch means being mounted on said diaphragm, a secondelement of said switch means, said diaphragm being formed of adistensible material which retains substantially the same distensibilityfor a greater period of time than the life of said battery, valve meansin said container permitting a more rapid rate of air passage in onedirection than the opposite direction, said diaphragm having a restposition which causes electrical contact between said elements of saidswitch means to energize said electromagnetic means to cause saiddiaphragm to move away from said rest position at a first rate therebyforcing air through said valve means at said more rapid rate andultimately breaking said electrical contact, whereupon said diaphragmreturns to its rest position at a second rate slower than said firstrate thereby forcing air through said valve means at a less rapid rateuntil said elements of said switch means again make electrical contactto reenergize said electromagnetic means.

12. A pulsing device comprising a container having an open end, adiaphragm disposed over said open end, electromagnetic means having oneportion thereof attached to said diaphragm, switch means adapted toperiodically connect said electromagnetic means to a battery, oneelement of said switch means being mounted on said diaphragm, a secondelement of said switch means, said diaphragm being formed of adistensible material which retains substantially the same distensibilityfor a greater period of time than the life of said battery, valve meansin said container permitting a more rapid rate of air passage in onedirection than the opposite direction, said diaphragm having a restposition which causes electrical contact between said elements of saidswitch means to energize said electromagnetic means to cause saiddiaphragm to move away from said rest position at a first rate therebyforcing air through said valve means at said more rapid rate andultimately breaking said electrical contact, whereupon said diaphragmreturns to its rest position at a second rate slower than said firstrate thereby forcing air through said valve means at a less rapid rateuntil said elements of said switch means again make electrical contactto reenergize said electromagnetic means, the air on one side of saiddiaphragm being connected to the air on the other side of said diaphragmthrough said valve means, when said air is moving through said valvemeans at said faster rate.

13. A pulsing device comprising an open ended container havingperipheral walls, a resilient diaphragm mounted over the open end ofsaid container in a rest position, electromagnetic means operativelyassociated with said diaphragm, said electromagnetic means having oneportion thereof attached to said diaphragm, switch means forperiodically energizing said electromagnetic means to cause periodicdistension of said diaphragm from said rest position, said switch meanshaving one element thereof mounted on said diaphragm and a secondelement stationarily mounted and in electrical contact with said firstelement when said diaphragm is in said rest position, said switch meansenergizing said electromagnetic means when said diaphragm is in saidrest position to cause its distension from said rest position wherebysaid electrical contact is broken and said diaphragm returns to its restposition, and valve means in said container permitting air flowtherethrough in one direction at a first rate and in the oppositedirection at a second slower rate, said air moving through said valve atsaid first rate as said diaphragm moves away from said rest positionduring the energization of said electromagnetic means and moving throughsaid valve at said second rate as said diaphragm returns to said restposition, said diaphragm having portions thereof which reverse theirdirection of movement when said electromagnetic means is deenergized andportions thereof which continue to move in the same direction after saidelectromagnetic means is deenergized, said element of said switchattached to said diaphragm being attached approximately at the portionthereof which continues its movement for the greatest distance aftersaid electromagnetic means is deenergized.

14. A device as set out in claim 13 wherein said resilient diaphragmcomprises latex stretched approximately 20%.

15. A device as set out in claim 14 wherein said portion of saidelectromagnetic means attached to said diaphragm comprises a coil havinga weight which causes a distension of said diaphragm of .002 inch-':2O%.

16. A device as set out in claim 15 wherein said coil has an ampere hourcapacity of 19-34 ampere-hours with a 1.5 volt voltage source.

17. A pulsing device comprising an open ended container havingperipheral walls, a diaphragm mounted over the open end of saidcontainer in a rest position to form a chamber, valve meanscommunicating with asid chamber, electromagnetic means operativelyassociated with said diaphragm, said electromagnetic means having oneportion thereof attached to said diaphragm, switch means forperiodically energizing said electromagnetic means to cause periodicdistension of said diaphragm from said rest position, said switch meanshaving one element thereof mounted on said diaphragm at a distance fromsaid one portion of said electromagnetic means equal to 35-65% of thedistance between said one portion of said electromagnetic means and saidperipheral wall, whereby energization of said electromagnetic meanscauses periodic distension of said diaphragm from said rest position ata first rate of movement and return of said diaphragm to said restposition at a second rate of movement slower than said first rate.

18. A device as set out in claim 17 wherein said container comprises aone piece cap and said diaphragm comprises a latex film attached to alatex ring attached to said cap by its resiliency.

19. A device as set out in claim 18 wherein said diaphragm has athickness of no less than .0015 inch.

20. A pulsing device comprising an open ended container havingperipheral walls, a diaphragm mounted over the open end of saidcontainer in a rest position, electromagnetic means operativelyassociated with said diaphragm, means adapted to be connected to asource of electric energy for periodically energizing saidelectromagnetic means to cause periodic distension of said diaphragmfrom said rest position, flap valve means on said container, saidcontainer having an opening therein having a larger diameter on one endthan on the other end, said flap of said flap valve means acting toclose the larger diameter end of said opening.

21. A pulsing device as set out in claim 20 wherein said flap is securedto said container about its entire periphery and has an opening therein.

22. A pulsing device as set out in claim 21 wherein said opening in saidflap is out of alignment with said opening in said container.

23. A pulsing device as set out in claim 20 wherein said containercomprises a one piece cap having a top and cylindrical peripheral walls,said diaphragm being latex.

24. A pulsing device as set out in claim 23 wherein said opening in saidcontainer is in said top of said cap and said flap is secured to onesurface of said top.

25. A pulsing device as set out in claim 24 wherein said flap is formedof latex.

26. A pulsing device as set out in claim 25 wherein said flap is on theoutside surface of said top.

27. A pulsing device comprising a one piece cap having a top andcylindrical walls extending therefrom a diaphragm mounted over the openend of said cap to form a chamber therein, said diaphragm comprising alatex film atltched to a latex ring resiliently secured around saidcylindrical walls to maintain said diaphragm in a stretched restcondition, valve means associated with said chamber for permittingtransfer of air to and from said chamber, said valve means being such asto permit air transfer in one direction at a faster rate than in theopposite direction, electromagnetic means operatively asso ciated withsaid diaphragm, switch means adapted to be connected to a source ofelectric energy for periodically energizing said electromagnetic meansto cause periodic distension of said diaphragm from said rest position,said distension causing one side of said diaphragm to move air throughsaid valve means at said faster rate, said diaphragm returning to itsrest position as air flows through said valve means in an oppositedirection at a slower rate, said switch means having one element thereofcarried by said diaphragm and another element thereof stationarilymounted, said switch elements being in electrical contact when saiddiaphragm is stationary and separated when said diaphragm is distendedfrom its rest condition.

28. A pulsing device as set out in claim 27 wherein said diaphragm is noless than .0015 inch thick.

29. A pulsing device as set out in claim 28 wherein said valve meanscomprises flap valve means, said cap having an opening in its top havinga larger diameter on one end than on the other end, said flap of saidflap valve means acting to close the larger diameter end of saidopening.

30. A pulsing device as set out in claim 29 wherein said flap is securedto said top about its entire periphery and has an opening therein.

31. A pulsing device as set out in claim 30 wherein said opening in saidflap is out of alignment with said opening in said top.

32. A pulsing device comprising a container having an open end andhaving peripheral walls, a distensible diaphragm mounted over the openend of said container in a rest position to define an air chamber,electromagnetic means including coil means attached to said diaphragm,switch means adapted to be connected to a battery for periodicallyenergizing said coil means to cause periodic distension of saiddiaphragm from said rest position, said switch means having one elementthereof mounted on said diaphragm in electrical contact with a secondswitch element stationarily mounted, said switch elements when incontact causing energization of said coil to thereby cause distension ofsaid diaphragm from said rest position, means associated with said airchamber for causing said distension from said rest position to occur ata first rate of movement thereby breaking said contact and return ofsaid diaphragm to said rest position at a second rate of movement slowerthan said first rate, said coil having an ampere turn capacity of 19-34with an impressed voltage of approximately 1.5 volts.

33. A pulsing device comprising a container having an open end andhaving peripheral walls, a distensible diaphragm mounted over the openend of said container in a rest position to define an air chamber,electromagnetic means including coil means attached to said diaphragm,switch means adapted to be connected to a battery for periodicallyenergizing said coil means to cause periodic distension of saiddiaphragm from said rest position, said switch means having one elementthereof mounted on said diaphragm in electrical contact with a secondswitch element stationarily mounted, said switch elements when incontact causing energization of said coil to thereby cause distension ofsaid diaphragm from said rest position, means associated with said airchamber for causing said distension from said rest position to occur ata first rate of movement thereby breaking said contact and return ofsaid diaphragm to said rest position at a second rate of movement slowerthan said first rate, said coil having a resistance of 20-40 ohms.

34. A pulsing device comprising a container having an open end andhaving peripheral walls, a distensible diaphragm mounted over the openend of said container in a rest position to define an air chamber,electromagnetic means including coil means attached to said diaphragm,switch means adapted to be connected to a battery for periodicallyenergizing said coil means to cause periodic distension of saiddiaphragm from said rest position, said switch means having one elementthereof mounted on said diaphragm in electrical contact with a secondswitch element stationarily mounted, said switch elements when incontact causing energization of said coil to thereby cause distension ofsaid diaphragm from said rest position, 3621115 associated with said airchamber for causing said distension from said rest position to occur ata first rate of movement thereby breaking said contact and return ofsaid diaphragm to said rest position at a second rate of movement slowerthan said first rarte, said coil being wound with copper wire having adiameter of approximately .00 25.O()5 inch.

35. A doll having a simulated heartbeat and pulse, comprising a dollbody enclosing battery means and including a container forming an airchamber, a rubber diaphragm forming one wall of said chamber, saiddiaphragm being in a stretched condition when at rest, said diaphragm ina stretched condition having been exposed to light having anultra-violet component substantially no greater than is found in theatmosphere, valve means associated with said chamber, said valve meansbeing such as to permit air transfer in one direction at a faster ratethan in the opposite direction, electromagnetic means operativelyassociated with said diaphragm, means connected to said battery meansfor periodically energizing said electromagnetic means to cause periodicdistension of said diaphragm from said rest position, said distensioncausing one side of said diaphragm to move air through 12 said valvemeans at said faster rate, the other side of said diaphragm beingsubjected to substantially atmospheric pressure as said air is forcedthrough said valve means at said faster rate, said diaphragm returningto its rest position as air flows through said valve means in anopposite direction at a slower rate.

References Cited in the file of this patent UNITED STATES PATENTS2,009,892 Leece July 30, 1935 2,791,765 Kahn et a1. May 7, 19572,936,450 Smith May 10, 1960 2,954,642 Jackson Oct. 4, 1960

1. A PULSING DEVICE COMPRISING A CONTAINER FORMING AN AIR CHAMBER, ARUBBER DIAPHRAGM FORMING ONE WALL OF SAID CHAMBER, SAID DIAPHRAGM BEINGIN A STRETCHED CONDITION WHEN AT REST, SAID DIAPHRAGM IN A STRETCHEDCONDITION HAVING BEEN EXPOSED TO LIGHT HAVING AN ULTRAVIOLET COMPONENTSUBSTANTIALLY NO GREATER THAN IS FOUND IN THE ATMOSPHERE, VALVE MEANSASSOCIATED WITH SAID CHAMBER FOR PERMITTING TRANSFER OF AIR TO AND FROMSAID CHAMBER, SAID VALVE MEANS BEING SUCH AS TO PERMIT AIR TRANSFER INONE DIRECTION AT A FASTER RATE THAN IN THE OPPOSITE DIRECTION,ELECTROMAGNETIC MEANS OPERATIVELY ASSOCIATED WITH SAID DIAPHRAGM, MEANSADAPTED TO BE CONNECTED TO A SOURCE OF ELECTRIC ENERGY FOR PERIODICALLYENERGIZING SAID ELECTROMAGNETIC MEANS TO CAUSE PERIODIC DISTENSION OFSAID DIAPHRAGM FROM SAID REST POSITION, SAID DISTENSION CAUSING ONE SIDEOF SAID DIAPHRAGM TO MOVE AIR THROUGH SAID VALVE MEANS AT SAID FASTERRATE, THE OTHER SIDE OF SAID DIAPHRAGM BEING SUBJECTED TO SUBSTANTIALLYATMOSPHERIC PRESSURE AS SAID AIR IS FORCED THROUGH SAID VALVE MEANS ATSAID FASTER RATE, SAID DIAPHRAGM RETURNING TO ITS REST POSITION AS AIRFLOWS THROUGH SAID VALVE MEANS IN AN OPPOSITE DIRECTION AT A SLOWERRATE.